{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.5307, 3.8855)",
 "slug": "discovered-lane-44-5307-3-8855",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.82978535272423,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 401.0,
   "end_distance_m": 403.0,
   "start_elevation_m": 931.1502040480789,
   "end_elevation_m": 931.8467997551334,
   "min_gradient_pct": -4.962325576752846
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.62407263540399,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 401.0,
   "end_distance_m": 404.0,
   "start_elevation_m": 931.1502040480789,
   "end_elevation_m": 932.188926227141,
   "min_gradient_pct": -4.5225460228645415
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.225657759705427,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 400.0,
   "end_distance_m": 405.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 932.4903644497381,
   "min_gradient_pct": -3.9752434825732053
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.02461818724123,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 400.0,
   "end_distance_m": 410.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 933.0315433804769,
   "min_gradient_pct": -0.12022650189919659
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 15.783926458105952,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 400.0,
   "end_distance_m": 420.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 934.085866853374,
   "min_gradient_pct": 5.162386146528206
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 14.822667549403377,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 400.0,
   "end_distance_m": 425.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 934.6347484491037,
   "min_gradient_pct": 5.292636389621293
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 13.432694937465158,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 732.0,
   "end_distance_m": 782.0,
   "start_elevation_m": 968.9407656048318,
   "end_elevation_m": 975.6571130735643,
   "min_gradient_pct": 5.712599646516992
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.808459589956897,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 686.0,
   "end_distance_m": 786.0,
   "start_elevation_m": 963.3860395730816,
   "end_elevation_m": 976.1944991630385,
   "min_gradient_pct": 6.693262080178101
  }
 ],
 "shape": {
  "ascent_concentration": 0.271,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 487.0,
  "shape_class": "sustained"
 },
 "length_m": 1542.4675970787362,
 "start_elevation_m": 887.1813908247028,
 "end_elevation_m": 1057.3700760078211,
 "endpoint_gain_m": 170.1886851831183,
 "overall_gradient_pct": 11.033533897596095,
 "accumulated_ascent_m": 170.44950298744095,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.225657759705427,
   "start_distance_m": 400.0,
   "end_distance_m": 405.0,
   "midpoint_distance_m": 402.5,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 932.4903644497381,
   "start_xy": [
    770448.7943821476,
    6381831.903008258
   ],
   "end_xy": [
    770444.8729988828,
    6381828.808563359
   ]
  },
  "max_10m": {
   "gradient_pct": 21.02461818724123,
   "start_distance_m": 400.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 933.0315433804769,
   "start_xy": [
    770448.7943821476,
    6381831.903008258
   ],
   "end_xy": [
    770440.9652027485,
    6381825.689408125
   ]
  },
  "max_20m": {
   "gradient_pct": 15.783926458105952,
   "start_distance_m": 400.0,
   "end_distance_m": 420.0,
   "midpoint_distance_m": 410.0,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 934.085866853374,
   "start_xy": [
    770448.7943821476,
    6381831.903008258
   ],
   "end_xy": [
    770436.2310152925,
    6381816.975294327
   ]
  },
  "max_25m": {
   "gradient_pct": 14.822667549403377,
   "start_distance_m": 400.0,
   "end_distance_m": 425.0,
   "midpoint_distance_m": 412.5,
   "start_elevation_m": 930.9290815617528,
   "end_elevation_m": 934.6347484491037,
   "start_xy": [
    770448.7943821476,
    6381831.903008258
   ],
   "end_xy": [
    770434.0267899334,
    6381812.487378267
   ]
  },
  "max_50m": {
   "gradient_pct": 13.432694937465158,
   "start_distance_m": 732.0,
   "end_distance_m": 782.0,
   "midpoint_distance_m": 757.0,
   "start_elevation_m": 968.9407656048318,
   "end_elevation_m": 975.6571130735643,
   "start_xy": [
    770376.4281711574,
    6381792.526720291
   ],
   "end_xy": [
    770368.61077439,
    6381841.7488419935
   ]
  },
  "max_100m": {
   "gradient_pct": 12.808459589956897,
   "start_distance_m": 686.0,
   "end_distance_m": 786.0,
   "midpoint_distance_m": 736.0,
   "start_elevation_m": 963.3860395730816,
   "end_elevation_m": 976.1944991630385,
   "start_xy": [
    770395.1106580674,
    6381750.743035207
   ],
   "end_xy": [
    770368.2383485717,
    6381845.730290441
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.9752434825732053,
   "start_distance_m": 395.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 397.5,
   "start_elevation_m": 931.1278437358815,
   "end_elevation_m": 930.9290815617528,
   "start_xy": [
    770453.5216199491,
    6381833.531879882
   ],
   "end_xy": [
    770448.7943821476,
    6381831.903008258
   ]
  },
  "min_10m": {
   "gradient_pct": -0.12022650189919659,
   "start_distance_m": 390.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 930.9411042119427,
   "end_elevation_m": 930.9290815617528,
   "start_xy": [
    770458.2488577506,
    6381835.160751507
   ],
   "end_xy": [
    770448.7943821476,
    6381831.903008258
   ]
  },
  "min_20m": {
   "gradient_pct": 5.162386146528206,
   "start_distance_m": 1522.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1532.0,
   "start_elevation_m": 1056.3120761056484,
   "end_elevation_m": 1057.344553334954,
   "start_xy": [
    770078.8053483029,
    6382226.397045432
   ],
   "end_xy": [
    770061.035186388,
    6382235.311799021
   ]
  },
  "min_25m": {
   "gradient_pct": 5.292636389621293,
   "start_distance_m": 1517.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1529.5,
   "start_elevation_m": 1056.0213942375487,
   "end_elevation_m": 1057.344553334954,
   "start_xy": [
    770083.5744337551,
    6382224.895105369
   ],
   "end_xy": [
    770061.035186388,
    6382235.311799021
   ]
  },
  "min_50m": {
   "gradient_pct": 5.712599646516992,
   "start_distance_m": 1492.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1517.0,
   "start_elevation_m": 1054.4882535116956,
   "end_elevation_m": 1057.344553334954,
   "start_xy": [
    770107.2348078691,
    6382216.900442656
   ],
   "end_xy": [
    770061.035186388,
    6382235.311799021
   ]
  },
  "min_100m": {
   "gradient_pct": 6.693262080178101,
   "start_distance_m": 1442.0,
   "end_distance_m": 1542.0,
   "midpoint_distance_m": 1492.0,
   "start_elevation_m": 1050.651291254776,
   "end_elevation_m": 1057.344553334954,
   "start_xy": [
    770153.3824108285,
    6382197.70671942
   ],
   "end_xy": [
    770061.035186388,
    6382235.311799021
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.82978535272423,
   "start_distance_m": 401.0,
   "end_distance_m": 403.0,
   "midpoint_distance_m": 402.0,
   "start_elevation_m": 931.1502040480789,
   "end_elevation_m": 931.8467997551334,
   "start_xy": [
    770447.9992357901,
    6381831.303887546
   ],
   "end_xy": [
    770446.4361173364,
    6381830.056225453
   ]
  },
  "max_3m": {
   "gradient_pct": 34.62407263540399,
   "start_distance_m": 401.0,
   "end_distance_m": 404.0,
   "midpoint_distance_m": 402.5,
   "start_elevation_m": 931.1502040480789,
   "end_elevation_m": 932.188926227141,
   "start_xy": [
    770447.9992357901,
    6381831.303887546
   ],
   "end_xy": [
    770445.6545581096,
    6381829.432394406
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.012,
   "obstruction_max_height_m": 6.51,
   "flagged_windows_m": []
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-mc6",
   "road_pbf": "block-batch-fr-mc6.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:af4eae1f5df9e232"
  },
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E770-N6381_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E770-N6382_0m5@21LHD4MO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T18:24:24+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E770-N6381",
   "E770-N6382"
  ],
  "elevation_blocks": [
   "21LHD4MO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0770_6382_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0770_6383_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0770_6382_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0770_6383_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 66,
   "stations_resolved": 66,
   "width_median_m": 6.25,
   "width_p10_m": 4.75,
   "width_min_m": 3.75,
   "width_max_m": 12.0,
   "bounded_share": 0.318,
   "unbounded_share": 0.682,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.0,
   "window_m": [
    400.0,
    425.0
   ],
   "width_at_max25_m": 6.75,
   "window_stations": 6,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 66,
    "stations_resolved": 66,
    "width_median_m": 7.62,
    "width_p10_m": 4.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.636,
    "unbounded_share": 0.364,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.75,
    "window_m": [
     400.0,
     425.0
    ],
    "width_at_max25_m": 7.5,
    "window_stations": 6,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "La Bastide-Puylaurent",
  "county": "Loz\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}